html div body p span{
    padding: 0;
    margin: 0;
}
.app{
   width: 300px;
   margin:100px auto;
   text-align: center;
   background-color: antiquewhite;                      
 
} 
.canvas{
    background-color:rosybrown; 
}
.show{
    display: flex;
    justify-content: space-between;
}
.press{
    width: 100%;
    height: 30px;
    display: flex;
    justify-content: space-around;
}
.press span{
    width: 25%;
	transition:all 0.3s linear;
	cursor: pointer;
}

.press span:hover{
	font-size: 25px;
    background-color: rosybrown;
}